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authorNiklas Hallqvist <niklas@cvs.openbsd.org>2001-07-04 09:49:50 +0000
committerNiklas Hallqvist <niklas@cvs.openbsd.org>2001-07-04 09:49:50 +0000
commit24b197f8e169652fc65556d4098458dc1036d86b (patch)
treec0c7651bbcd72ba8b805c85e4d90491b25d71f05 /sys
parentd0c96107fa928cd5fd18e3dcffe161b54cffbc67 (diff)
Kill this for real hopefully
Diffstat (limited to 'sys')
-rw-r--r--sys/dev/isa/if_ep.c1503
1 files changed, 0 insertions, 1503 deletions
diff --git a/sys/dev/isa/if_ep.c b/sys/dev/isa/if_ep.c
deleted file mode 100644
index b6ca5cc40bb..00000000000
--- a/sys/dev/isa/if_ep.c
+++ /dev/null
@@ -1,1503 +0,0 @@
-/* $OpenBSD: if_ep.c,v 1.14 1996/05/05 13:38:29 mickey Exp $ */
-/* $NetBSD: if_ep.c,v 1.90 1996/04/11 22:29:15 cgd Exp $ */
-
-/*
- * Copyright (c) 1994 Herb Peyerl <hpeyerl@novatel.ca>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Herb Peyerl.
- * 4. The name of Herb Peyerl may not be used to endorse or promote products
- * derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "pcmcia.h"
-#include "bpfilter.h"
-#include "ep.h"
-
-#include <sys/param.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-#include <sys/ioctl.h>
-#include <sys/errno.h>
-#include <sys/syslog.h>
-#include <sys/select.h>
-#include <sys/device.h>
-#include <sys/systm.h>
-
-#include <net/if.h>
-#include <net/netisr.h>
-#include <net/if_dl.h>
-#include <net/if_types.h>
-#include <net/netisr.h>
-
-#ifdef INET
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/in_var.h>
-#include <netinet/ip.h>
-#include <netinet/if_ether.h>
-#endif
-
-#if NBPFILTER > 0
-#include <net/bpf.h>
-#include <net/bpfdesc.h>
-#endif
-
-#include "pci.h"
-
-#include <machine/cpu.h>
-#include <machine/pio.h>
-
-#include <dev/isa/isavar.h>
-#include <dev/isa/if_epreg.h>
-#include <dev/isa/elink.h>
-
-#include <dev/pci/pcivar.h>
-#include <dev/pci/pcireg.h>
-#include <dev/pci/pcidevs.h>
-
-/* PCI constants */
-#define PCI_VENDORID(x) ((x) & 0xFFFF)
-#define PCI_CHIPID(x) (((x) >> 16) & 0xFFFF)
-#define PCI_CONN 0x48 /* Connector type */
-#define PCI_CBMA 0x10 /* Configuration Base Memory Address */
-
-
-#define ETHER_MIN_LEN 64
-#define ETHER_MAX_LEN 1518
-#define ETHER_ADDR_LEN 6
-/*
- * Ethernet software status per interface.
- */
-struct ep_softc {
- struct device sc_dev;
- void *sc_ih;
-
- struct arpcom sc_arpcom; /* Ethernet common part */
- int ep_iobase; /* i/o bus address */
- char ep_connectors; /* Connectors on this card. */
-#define MAX_MBS 8 /* # of mbufs we keep around */
- struct mbuf *mb[MAX_MBS]; /* spare mbuf storage. */
- int next_mb; /* Which mbuf to use next. */
- int last_mb; /* Last mbuf. */
- int tx_start_thresh; /* Current TX_start_thresh. */
- int tx_succ_ok; /* # packets sent in sequence */
- /* w/o underrun */
- u_char bustype;
-#define EP_BUS_ISA 0x0
-#define EP_BUS_PCMCIA 0x1
-#define EP_BUS_EISA 0x2
-#define EP_BUS_PCI 0x3
-
-#define EP_IS_BUS_32(a) ((a) & 0x2)
-
- u_char pcmcia_flags;
-#define EP_REATTACH 0x01
-#define EP_ABSENT 0x02
-};
-
-static int epprobe __P((struct device *, void *, void *));
-static void epattach __P((struct device *, struct device *, void *));
-
-/* XXX the following two structs should be different. */
-#if NEP_ISA > 0
-struct cfattach ep_isa_ca = {
- sizeof(struct ep_softc), epprobe, epattach
-};
-#endif
-
-#if NEP_PCI > 0
-struct cfattach ep_pci_ca = {
- sizeof(struct ep_softc), epprobe, epattach
-};
-#endif
-
-
-struct cfdriver ep_cd = {
- NULL, "ep", DV_IFNET
-};
-
-int epintr __P((void *));
-static int epstatus __P((struct ep_softc *));
-void epinit __P((struct ep_softc *));
-int epioctl __P((struct ifnet *, u_long, caddr_t));
-void epstart __P((struct ifnet *));
-void epwatchdog __P((int));
-void epreset __P((struct ep_softc *));
-void epread __P((struct ep_softc *));
-struct mbuf *epget __P((struct ep_softc *, int));
-void epmbuffill __P((void *));
-void epmbufempty __P((struct ep_softc *));
-void epstop __P((struct ep_softc *));
-void epsetfilter __P((struct ep_softc *));
-void epsetlink __P((struct ep_softc *));
-static void epconfig __P((struct ep_softc *, u_int));
-
-static u_short epreadeeprom __P((int id_port, int offset));
-static int epbusyeeprom __P((struct ep_softc *));
-
-#define MAXEPCARDS 20 /* if you have 21 cards in your machine... you lose */
-
-static struct epcard {
- int iobase;
- int irq;
- char available;
- char bustype;
-} epcards[MAXEPCARDS];
-static int nepcards;
-
-static void
-epaddcard(iobase, irq, bustype)
- int iobase;
- int irq;
- char bustype;
-{
-
- if (nepcards >= MAXEPCARDS)
- return;
- epcards[nepcards].iobase = iobase;
- epcards[nepcards].irq = (irq == 2) ? 9 : irq;
- epcards[nepcards].available = 1;
- epcards[nepcards].bustype = bustype;
- nepcards++;
-}
-
-#if NEP_PCMCIA > 0
-#include <dev/pcmcia/pcmciavar.h>
-
-int ep_pcmcia_match __P((struct device *, void *, void *));
-void ep_pcmcia_attach __P((struct device *, struct device *, void *));
-int ep_pcmcia_detach __P((struct device *));
-
-static int ep_pcmcia_isa_attach __P((struct device *, void *,
- void *, struct pcmcia_link *));
-static int epmod __P((struct pcmcia_link *, struct device *,
- struct pcmcia_conf *, struct cfdata * cf));
-static int ep_remove __P((struct pcmcia_link *, struct device *));
-
-struct cfattach ep_pcmcia_ca = {
- sizeof(struct ep_softc), ep_pcmcia_match, epattach, ep_pcmcia_detach
-};
-
-/* additional setup needed for pcmcia devices */
-static int
-ep_pcmcia_isa_attach(parent, match, aux, pc_link)
- struct device *parent;
- void *match;
- void *aux;
- struct pcmcia_link *pc_link;
-{
- struct ep_softc *sc = (void *) match;
-/* struct cfdata *cf = sc->sc_dev.dv_cfdata;*/
- struct isa_attach_args *ia = aux;
-/* struct pcmciadevs *dev = pc_link->device;*/
- struct ifnet *ifp = &sc->sc_arpcom.ac_if;
- int i;
- extern int ifqmaxlen;
-
- outw(ia->ia_iobase + EP_COMMAND, WINDOW_SELECT | 0);
- outw(ia->ia_iobase + EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
- outw(ia->ia_iobase + EP_W0_RESOURCE_CFG, 0x3f00);
-
- /*
- * ok til here. Now try to figure out which link we have.
- * try coax first...
- */
-#ifdef EP_COAX_DEFAULT
- outw(ia->ia_iobase + EP_W0_ADDRESS_CFG, 0xC000);
-#else
- /* COAX as default is reported to be a problem */
- outw(ia->ia_iobase + EP_W0_ADDRESS_CFG, 0x0000);
-#endif
- ifp->if_snd.ifq_maxlen = ifqmaxlen;
-
- epaddcard(ia->ia_iobase, ia->ia_irq, EP_BUS_PCMCIA);
-
- for (i = 0; i < nepcards; i++) {
- if (epcards[i].available == 0)
- continue;
- if (ia->ia_iobase != IOBASEUNK &&
- ia->ia_iobase != epcards[i].iobase)
- continue;
- if (ia->ia_irq != IRQUNK &&
- ia->ia_irq != epcards[i].irq)
- continue;
- goto good;
- }
- return 0;
-
-good:
-
- epcards[i].available = 0;
- ia->ia_iobase = epcards[i].iobase;
- ia->ia_irq = epcards[i].irq;
- ia->ia_iosize = 0x10;
- ia->ia_msize = 0;
-
- sc->bustype = epcards[i].bustype;
- sc->pcmcia_flags = (pc_link->flags & PCMCIA_REATTACH) ? EP_REATTACH:0;
- return 1;
-}
-
-/* modify config entry */
-static int
-epmod(pc_link, self, pc_cf, cf)
- struct pcmcia_link *pc_link;
- struct device *self;
- struct pcmcia_conf *pc_cf;
- struct cfdata *cf;
-{
- int err;
-/* struct pcmciadevs *dev = pc_link->device;*/
-/* struct ep_softc *sc = (void *) self;*/
-
- if ((err = PCMCIA_BUS_CONFIG(pc_link->adapter, pc_link, self,
- pc_cf, cf)) != 0) {
- printf("bus_config failed %d\n", err);
- return err;
- }
-
- if (pc_cf->io[0].len > 0x10)
- pc_cf->io[0].len = 0x10;
-#if 0
- pc_cf->cfgtype = DOSRESET;
-#endif
- pc_cf->cfgtype = 1;
-
- return 0;
-}
-
-static int
-ep_remove(pc_link, self)
- struct pcmcia_link *pc_link;
- struct device *self;
-{
- struct ep_softc *sc = (void *) self;
- struct ifnet *ifp = &sc->sc_arpcom.ac_if;
- if_down(ifp);
- epstop(sc);
- ifp->if_flags &= ~(IFF_RUNNING | IFF_UP);
- sc->pcmcia_flags = EP_ABSENT;
- return PCMCIA_BUS_UNCONFIG(pc_link->adapter, pc_link);
-}
-
-static struct pcmcia_3com {
- struct pcmcia_device pcd;
-} pcmcia_3com = {
- {"PCMCIA 3COM 3C589", epmod, ep_pcmcia_isa_attach, NULL, ep_remove}
-};
-
-struct pcmciadevs pcmcia_ep_devs[] = {
- {
- "ep", 0, "3Com Corporation", "3C589",
-#if 0
- "TP/BNC LAN Card Ver. 1a", "000001",
-#else
- NULL, NULL,
-#endif
- (void *) -1, (void *) &pcmcia_3com
- },
-#if 0
- {
- "ep", 0, "3Com Corporation", "3C589", "TP/BNC LAN Card Ver. 2a", "000002",
- (void *) -1, (void *) &pcmcia_3com
- },
-#endif
- { NULL }
-};
-#define nep_pcmcia_devs sizeof(pcmcia_ep_devs)/sizeof(pcmcia_ep_devs[0])
-
-int
-ep_pcmcia_match(parent, match, aux)
- struct device *parent;
- void *match, *aux;
-{
- return pcmcia_slave_match(parent, match, aux, pcmcia_ep_devs,
- nep_pcmcia_devs);
-}
-
-void
-ep_pcmcia_attach(parent, self, aux)
- struct device *parent, *self;
- void *aux;
-{
- struct pcmcia_attach_args *paa = aux;
-
- printf("ep_pcmcia_attach %p %p %p\n", parent, self, aux);
- delay(2000000);
- if (!pcmcia_configure(parent, self, paa->paa_link)) {
- struct ep_softc *sc = (void *)self;
- sc->pcmcia_flags |= EP_ABSENT;
- printf(": not attached\n");
- }
-}
-
-/*
- * No detach; network devices are too well linked into the rest of the
- * kernel.
- */
-int
-ep_pcmcia_detach(self)
- struct device *self;
-{
- return EBUSY;
-}
-
-#endif
-
-
-/*
- * 3c579 cards on the EISA bus are probed by their slot number. 3c509
- * cards on the ISA bus are probed in ethernet address order. The probe
- * sequence requires careful orchestration, and we'd like like to allow
- * the irq and base address to be wildcarded. So, we probe all the cards
- * the first time epprobe() is called. On subsequent calls we look for
- * matching cards.
- */
-int
-epprobe(parent, match, aux)
- struct device *parent;
- void *match, *aux;
-{
- struct ep_softc *sc = match;
- struct isa_attach_args *ia = aux;
- static int probed;
- int slot, iobase, i;
- u_short vendor, model;
- int k, k2;
-
-#if NPCI > 0
- extern struct cfdriver pci_cd;
-
- if (parent->dv_cfdata->cf_driver == &pci_cd) {
- struct pci_attach_args *pa = (struct pci_attach_args *) aux;
-
- if (PCI_VENDORID(pa->pa_id) != PCI_VENDOR_3COM)
- return 0;
-
- switch (PCI_CHIPID(pa->pa_id)) {
- case PCI_PRODUCT_3COM_3C590:
- case PCI_PRODUCT_3COM_3C595:
- break;
- default:
- return 0;
- }
-
- if (nepcards >= MAXEPCARDS)
- return 0;
-
- epcards[nepcards++].available = 0;
- return 1;
- }
-#endif
-
- if (!probed) {
- probed = 1;
-
- /* find all EISA cards */
- for (slot = 1; slot < 16; slot++) {
- iobase = 0x1000 * slot;
-
- vendor = htons(inw(iobase + EISA_VENDOR));
- if (vendor != MFG_ID)
- continue;
-
- model = htons(inw(iobase + EISA_MODEL));
- if ((model & 0xfff0) != PROD_ID) {
-#ifndef trusted
- printf("epprobe: ignoring model %04x\n", model);
-#endif
- continue;
- }
-
- outb(iobase + EISA_CONTROL, EISA_ENABLE | EISA_RESET);
- delay(10);
- outb(iobase + EISA_CONTROL, EISA_ENABLE);
- /* Wait for reset? */
- delay(1000);
-
- k = inw(iobase + EP_W0_ADDRESS_CFG);
- k = (k & 0x1f) * 0x10 + 0x200;
-
- k2 = inw(iobase + EP_W0_RESOURCE_CFG);
- k2 >>= 12;
- epaddcard(iobase, k2, EP_BUS_EISA);
- }
-
- for (slot = 0; slot < 10; slot++) {
- elink_reset();
- elink_idseq(ELINK_509_POLY);
-
- /* Untag all the adapters so they will talk to us. */
- if (slot == 0)
- outb(ELINK_ID_PORT, TAG_ADAPTER + 0);
-
- vendor =
- htons(epreadeeprom(ELINK_ID_PORT, EEPROM_MFG_ID));
- if (vendor != MFG_ID)
- continue;
-
- model =
- htons(epreadeeprom(ELINK_ID_PORT, EEPROM_PROD_ID));
- if ((model & 0xfff0) != PROD_ID) {
-#ifndef trusted
- printf("epprobe: ignoring model %04x\n", model);
-#endif
- continue;
- }
-
- k = epreadeeprom(ELINK_ID_PORT, EEPROM_ADDR_CFG);
- k = (k & 0x1f) * 0x10 + 0x200;
-
- k2 = epreadeeprom(ELINK_ID_PORT, EEPROM_RESOURCE_CFG);
- k2 >>= 12;
- epaddcard(k, k2, EP_BUS_ISA);
-
- /* so card will not respond to contention again */
- outb(ELINK_ID_PORT, TAG_ADAPTER + 1);
-
- /*
- * XXX: this should probably not be done here
- * because it enables the drq/irq lines from
- * the board. Perhaps it should be done after
- * we have checked for irq/drq collisions?
- */
- outb(ELINK_ID_PORT, ACTIVATE_ADAPTER_TO_CONFIG);
- }
- /* XXX should we sort by ethernet address? */
- }
-
- for (i = 0; i < nepcards; i++) {
- if (epcards[i].available == 0)
- continue;
- if (ia->ia_iobase != IOBASEUNK &&
- ia->ia_iobase != epcards[i].iobase)
- continue;
- if (ia->ia_irq != IRQUNK &&
- ia->ia_irq != epcards[i].irq)
- continue;
- goto good;
- }
- return 0;
-
-good:
- epcards[i].available = 0;
- sc->bustype = epcards[i].bustype;
- ia->ia_iobase = epcards[i].iobase;
- ia->ia_irq = epcards[i].irq;
- ia->ia_iosize = 0x10;
- ia->ia_msize = 0;
- return 1;
-}
-
-static void
-epconfig(sc, conn)
- struct ep_softc *sc;
- u_int conn;
-{
- u_short i;
-
- struct ifnet *ifp = &sc->sc_arpcom.ac_if;
-
- sc->ep_connectors = 0;
- printf(": ");
- if (conn & IS_AUI) {
- printf("aui");
- sc->ep_connectors |= AUI;
- }
- if (conn & IS_BNC) {
- if (sc->ep_connectors)
- printf("/");
- printf("bnc");
- sc->ep_connectors |= BNC;
- }
- if (conn & IS_UTP) {
- if (sc->ep_connectors)
- printf("/");
- printf("utp");
- sc->ep_connectors |= UTP;
- }
- if (!sc->ep_connectors)
- printf("no connectors!");
-
- /*
- * Read the station address from the eeprom
- */
- for (i = 0; i < 3; i++) {
- u_short x;
- if (epbusyeeprom(sc))
- return;
- outw(BASE + EP_W0_EEPROM_COMMAND, READ_EEPROM | i);
- if (epbusyeeprom(sc))
- return;
- x = inw(BASE + EP_W0_EEPROM_DATA);
- sc->sc_arpcom.ac_enaddr[(i << 1)] = x >> 8;
- sc->sc_arpcom.ac_enaddr[(i << 1) + 1] = x;
- }
-
- printf(" address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr));
-
- ifp->if_unit = sc->sc_dev.dv_unit;
- ifp->if_name = ep_cd.cd_name;
- ifp->if_start = epstart;
- ifp->if_ioctl = epioctl;
- ifp->if_watchdog = epwatchdog;
- ifp->if_flags =
- IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST;
-
- if ((sc->pcmcia_flags & EP_REATTACH) == 0) {
- if_attach(ifp);
- ether_ifattach(ifp);
-
-#if NBPFILTER > 0
- bpfattach(&sc->sc_arpcom.ac_if.if_bpf, ifp, DLT_EN10MB,
- sizeof(struct ether_header));
-#endif
- }
- sc->tx_start_thresh = 20; /* probably a good starting point. */
-}
-
-static void
-epattach(parent, self, aux)
- struct device *parent, *self;
- void *aux;
-{
- struct ep_softc *sc = (void *)self;
- u_short conn = 0;
-#if NPCI > 0
- extern struct cfdriver pci_cd;
-
- if (parent->dv_cfdata->cf_driver == &pci_cd) {
- struct pci_attach_args *pa = aux;
- int iobase;
- u_short i;
-
- if (pci_map_io(pa->pa_tag, PCI_CBMA, &iobase)) {
- printf("%s: couldn't map io\n", sc->sc_dev.dv_xname);
- return;
- }
- sc->bustype = EP_BUS_PCI;
- sc->ep_iobase = iobase; /* & 0xfffffff0 */
- i = pci_conf_read(pa->pa_bc, pa->pa_tag, PCI_CONN);
-
- /*
- * Bits 13,12,9 of the isa adapter are the same as bits
- * 5,4,3 of the pci adapter
- */
- if (i & IS_PCI_AUI)
- conn |= IS_AUI;
- if (i & IS_PCI_BNC)
- conn |= IS_BNC;
- if (i & IS_PCI_UTP)
- conn |= IS_UTP;
-
- GO_WINDOW(0);
- }
- else
-#endif
- {
- struct isa_attach_args *ia = aux;
-
- sc->ep_iobase = ia->ia_iobase;
- GO_WINDOW(0);
- conn = inw(ia->ia_iobase + EP_W0_CONFIG_CTRL);
- }
-
- epconfig(sc, conn);
-
-
-#if NPCI > 0
- if (parent->dv_cfdata->cf_driver == &pci_cd) {
- struct pci_attach_args *pa = aux;
-
- pci_conf_write(pa->pa_bc, pa->pa_tag, PCI_COMMAND_STATUS_REG,
- pci_conf_read(pa->pa_bc, pa->pa_tag,
- PCI_COMMAND_STATUS_REG) |
- PCI_COMMAND_MASTER_ENABLE);
-
- sc->sc_ih = pci_map_int(pa->pa_tag, IPL_NET, epintr, sc);
- if (sc->sc_ih == NULL) {
- printf("%s: couldn't map interrupt\n",
- sc->sc_dev.dv_xname);
- return;
- }
- epstop(sc);
- }
- else
-#endif
- {
- struct isa_attach_args *ia = aux;
- sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq,
- IST_EDGE, IPL_NET, epintr, sc, sc->sc_dev.dv_xname);
- }
-}
-
-/*
- * The order in here seems important. Otherwise we may not receive
- * interrupts. ?!
- */
-void
-epinit(sc)
- register struct ep_softc *sc;
-{
- register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
- int i;
-
- while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
- ;
-
- if (sc->bustype != EP_BUS_PCI) {
- GO_WINDOW(0);
- outw(BASE + EP_W0_CONFIG_CTRL, 0);
- outw(BASE + EP_W0_CONFIG_CTRL, ENABLE_DRQ_IRQ);
- }
-
- if (sc->bustype == EP_BUS_PCMCIA) {
-#ifdef EP_COAX_DEFAULT
- outw(BASE + EP_W0_ADDRESS_CFG,3<<14);
-#else
- outw(BASE + EP_W0_ADDRESS_CFG,0<<14);
-#endif
- outw(BASE + EP_W0_RESOURCE_CFG, 0x3f00);
- }
-
- GO_WINDOW(2);
- for (i = 0; i < 6; i++) /* Reload the ether_addr. */
- outb(BASE + EP_W2_ADDR_0 + i, sc->sc_arpcom.ac_enaddr[i]);
-
- outw(BASE + EP_COMMAND, RX_RESET);
- outw(BASE + EP_COMMAND, TX_RESET);
-
- GO_WINDOW(1); /* Window 1 is operating window */
- for (i = 0; i < 31; i++)
- inb(BASE + EP_W1_TX_STATUS);
-
- outw(BASE + EP_COMMAND, SET_RD_0_MASK | S_CARD_FAILURE |
- S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
- outw(BASE + EP_COMMAND, SET_INTR_MASK | S_CARD_FAILURE |
- S_RX_COMPLETE | S_TX_COMPLETE | S_TX_AVAIL);
-
- /*
- * Attempt to get rid of any stray interrupts that occured during
- * configuration. On the i386 this isn't possible because one may
- * already be queued. However, a single stray interrupt is
- * unimportant.
- */
- outw(BASE + EP_COMMAND, ACK_INTR | 0xff);
-
- epsetfilter(sc);
- epsetlink(sc);
-
- outw(BASE + EP_COMMAND, RX_ENABLE);
- outw(BASE + EP_COMMAND, TX_ENABLE);
-
- epmbuffill(sc);
-
- /* Interface is now `running', with no output active. */
- ifp->if_flags |= IFF_RUNNING;
- ifp->if_flags &= ~IFF_OACTIVE;
-
- /* Attempt to start output, if any. */
- epstart(ifp);
-}
-
-void
-epsetfilter(sc)
- register struct ep_softc *sc;
-{
- register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
-
- GO_WINDOW(1); /* Window 1 is operating window */
- outw(BASE + EP_COMMAND, SET_RX_FILTER |
- FIL_INDIVIDUAL | FIL_BRDCST |
- ((ifp->if_flags & IFF_MULTICAST) ? FIL_MULTICAST : 0 ) |
- ((ifp->if_flags & IFF_PROMISC) ? FIL_PROMISC : 0 ));
-}
-
-void
-epsetlink(sc)
- register struct ep_softc *sc;
-{
- register struct ifnet *ifp = &sc->sc_arpcom.ac_if;
-
- /*
- * you can `ifconfig (link0|-link0) ep0' to get the following
- * behaviour:
- * -link0 disable AUI/UTP. enable BNC.
- * link0 disable BNC. enable AUI.
- * link1 if the card has a UTP connector, and link0 is
- * set too, then you get the UTP port.
- */
- GO_WINDOW(4);
- outw(BASE + EP_W4_MEDIA_TYPE, DISABLE_UTP);
- if (!(ifp->if_flags & IFF_LINK0) && (sc->ep_connectors & BNC)) {
- if (sc->bustype == EP_BUS_PCMCIA) {
- GO_WINDOW(0);
- outw(BASE + EP_W0_ADDRESS_CFG,3<<14);
- GO_WINDOW(1);
- }
- outw(BASE + EP_COMMAND, START_TRANSCEIVER);
- delay(1000);
- }
- if (ifp->if_flags & IFF_LINK0) {
- outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
- delay(1000);
- if ((ifp->if_flags & IFF_LINK1) && (sc->ep_connectors & UTP)) {
- if (sc->bustype == EP_BUS_PCMCIA) {
- GO_WINDOW(0);
- outw(BASE + EP_W0_ADDRESS_CFG,0<<14);
- GO_WINDOW(4);
- }
- outw(BASE + EP_W4_MEDIA_TYPE, ENABLE_UTP);
- }
- }
- GO_WINDOW(1);
-}
-
-/*
- * Start outputting on the interface.
- * Always called as splnet().
- */
-void
-epstart(ifp)
- struct ifnet *ifp;
-{
- register struct ep_softc *sc = ep_cd.cd_devs[ifp->if_unit];
- struct mbuf *m, *m0;
- int sh, len, pad;
-
- /* Don't transmit if interface is busy or not running */
- if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING)
- return;
-
-startagain:
- /* Sneak a peek at the next packet */
- m0 = ifp->if_snd.ifq_head;
- if (m0 == 0)
- return;
-
- /* We need to use m->m_pkthdr.len, so require the header */
- if ((m0->m_flags & M_PKTHDR) == 0)
- panic("epstart: no header mbuf");
- len = m0->m_pkthdr.len;
-
- pad = (4 - len) & 3;
-
- /*
- * The 3c509 automatically pads short packets to minimum ethernet
- * length, but we drop packets that are too large. Perhaps we should
- * truncate them instead?
- */
- if (len + pad > ETHER_MAX_LEN) {
- /* packet is obviously too large: toss it */
- ++ifp->if_oerrors;
- IF_DEQUEUE(&ifp->if_snd, m0);
- m_freem(m0);
- goto readcheck;
- }
-
- if (inw(BASE + EP_W1_FREE_TX) < len + pad + 4) {
- outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | (len + pad + 4));
- /* not enough room in FIFO */
- ifp->if_flags |= IFF_OACTIVE;
- return;
- } else {
- outw(BASE + EP_COMMAND, SET_TX_AVAIL_THRESH | 2044);
- }
-
- IF_DEQUEUE(&ifp->if_snd, m0);
- if (m0 == 0) /* not really needed */
- return;
-
- outw(BASE + EP_COMMAND, SET_TX_START_THRESH |
- (len / 4 + sc->tx_start_thresh));
-
-#if NBPFILTER > 0
- if (ifp->if_bpf)
- bpf_mtap(ifp->if_bpf, m0);
-#endif
-
- /*
- * Do the output at splhigh() so that an interrupt from another device
- * won't cause a FIFO underrun.
- */
- sh = splhigh();
-
- outw(BASE + EP_W1_TX_PIO_WR_1, len);
- outw(BASE + EP_W1_TX_PIO_WR_1, 0xffff); /* Second dword meaningless */
- if (EP_IS_BUS_32(sc->bustype)) {
- for (m = m0; m; ) {
- if (m->m_len > 3)
- outsl(BASE + EP_W1_TX_PIO_WR_1,
- mtod(m, caddr_t), m->m_len / 4);
- if (m->m_len & 3)
- outsb(BASE + EP_W1_TX_PIO_WR_1,
- mtod(m, caddr_t) + (m->m_len & ~3),
- m->m_len & 3);
- MFREE(m, m0);
- m = m0;
- }
- } else {
- for (m = m0; m; ) {
- if (m->m_len > 1)
- outsw(BASE + EP_W1_TX_PIO_WR_1,
- mtod(m, caddr_t), m->m_len / 2);
- if (m->m_len & 1)
- outb(BASE + EP_W1_TX_PIO_WR_1,
- *(mtod(m, caddr_t) + m->m_len - 1));
- MFREE(m, m0);
- m = m0;
- }
- }
- while (pad--)
- outb(BASE + EP_W1_TX_PIO_WR_1, 0);
-
- splx(sh);
-
- ++ifp->if_opackets;
-
-readcheck:
- if ((inw(BASE + EP_W1_RX_STATUS) & ERR_INCOMPLETE) == 0) {
- /* We received a complete packet. */
- u_short status = inw(BASE + EP_STATUS);
-
- if ((status & S_INTR_LATCH) == 0) {
- /*
- * No interrupt, read the packet and continue
- * Is this supposed to happen? Is my motherboard
- * completely busted?
- */
- epread(sc);
- }
- else
- /* Got an interrupt, return so that it gets serviced. */
- return;
- }
- else {
- /* Check if we are stuck and reset [see XXX comment] */
- if (epstatus(sc)) {
- if (ifp->if_flags & IFF_DEBUG)
- printf("%s: adapter reset\n",
- sc->sc_dev.dv_xname);
- epreset(sc);
- }
- }
-
- goto startagain;
-}
-
-
-/*
- * XXX: The 3c509 card can get in a mode where both the fifo status bit
- * FIFOS_RX_OVERRUN and the status bit ERR_INCOMPLETE are set
- * We detect this situation and we reset the adapter.
- * It happens at times when there is a lot of broadcast traffic
- * on the cable (once in a blue moon).
- */
-static int
-epstatus(sc)
- register struct ep_softc *sc;
-{
- u_short fifost;
-
- /*
- * Check the FIFO status and act accordingly
- */
- GO_WINDOW(4);
- fifost = inw(BASE + EP_W4_FIFO_DIAG);
- GO_WINDOW(1);
-
- if (fifost & FIFOS_RX_UNDERRUN) {
- if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
- printf("%s: RX underrun\n", sc->sc_dev.dv_xname);
- epreset(sc);
- return 0;
- }
-
- if (fifost & FIFOS_RX_STATUS_OVERRUN) {
- if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
- printf("%s: RX Status overrun\n", sc->sc_dev.dv_xname);
- return 1;
- }
-
- if (fifost & FIFOS_RX_OVERRUN) {
- if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
- printf("%s: RX overrun\n", sc->sc_dev.dv_xname);
- return 1;
- }
-
- if (fifost & FIFOS_TX_OVERRUN) {
- if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
- printf("%s: TX overrun\n", sc->sc_dev.dv_xname);
- epreset(sc);
- return 0;
- }
-
- return 0;
-}
-
-
-static void
-eptxstat(sc)
- register struct ep_softc *sc;
-{
- int i;
-
- /*
- * We need to read+write TX_STATUS until we get a 0 status
- * in order to turn off the interrupt flag.
- */
- while ((i = inb(BASE + EP_W1_TX_STATUS)) & TXS_COMPLETE) {
- outb(BASE + EP_W1_TX_STATUS, 0x0);
-
- if (i & TXS_JABBER) {
- ++sc->sc_arpcom.ac_if.if_oerrors;
- if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
- printf("%s: jabber (%x)\n",
- sc->sc_dev.dv_xname, i);
- epreset(sc);
- } else if (i & TXS_UNDERRUN) {
- ++sc->sc_arpcom.ac_if.if_oerrors;
- if (sc->sc_arpcom.ac_if.if_flags & IFF_DEBUG)
- printf("%s: fifo underrun (%x) @%d\n",
- sc->sc_dev.dv_xname, i,
- sc->tx_start_thresh);
- if (sc->tx_succ_ok < 100)
- sc->tx_start_thresh = min(ETHER_MAX_LEN,
- sc->tx_start_thresh + 20);
- sc->tx_succ_ok = 0;
- epreset(sc);
- } else if (i & TXS_MAX_COLLISION) {
- ++sc->sc_arpcom.ac_if.if_collisions;
- outw(BASE + EP_COMMAND, TX_ENABLE);
- sc->sc_arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
- } else
- sc->tx_succ_ok = (sc->tx_succ_ok+1) & 127;
-
- }
-}
-
-int
-epintr(arg)
- void *arg;
-{
- register struct ep_softc *sc = arg;
- struct ifnet *ifp = &sc->sc_arpcom.ac_if;
- u_short status;
- int ret = 0;
-
- for (;;) {
- outw(BASE + EP_COMMAND, C_INTR_LATCH);
-
- status = inw(BASE + EP_STATUS);
-
- if ((status & (S_TX_COMPLETE | S_TX_AVAIL |
- S_RX_COMPLETE | S_CARD_FAILURE)) == 0)
- break;
-
- ret = 1;
-
- /*
- * Acknowledge any interrupts. It's important that we do this
- * first, since there would otherwise be a race condition.
- * Due to the i386 interrupt queueing, we may get spurious
- * interrupts occasionally.
- */
- outw(BASE + EP_COMMAND, ACK_INTR | status);
-
- if (status & S_RX_COMPLETE)
- epread(sc);
- if (status & S_TX_AVAIL) {
- sc->sc_arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
- epstart(&sc->sc_arpcom.ac_if);
- }
- if (status & S_CARD_FAILURE) {
- printf("%s: adapter failure (%x)\n",
- sc->sc_dev.dv_xname, status);
- epreset(sc);
- return (1);
- }
- if (status & S_TX_COMPLETE) {
- eptxstat(sc);
- epstart(ifp);
- }
- }
-
- /* no more interrupts */
- return (ret);
-}
-
-void
-epread(sc)
- register struct ep_softc *sc;
-{
- struct ifnet *ifp = &sc->sc_arpcom.ac_if;
- struct mbuf *m;
- struct ether_header *eh;
- int len;
-
- len = inw(BASE + EP_W1_RX_STATUS);
-
-again:
- if (ifp->if_flags & IFF_DEBUG) {
- int err = len & ERR_MASK;
- char *s = NULL;
-
- if (len & ERR_INCOMPLETE)
- s = "incomplete packet";
- else if (err == ERR_OVERRUN)
- s = "packet overrun";
- else if (err == ERR_RUNT)
- s = "runt packet";
- else if (err == ERR_ALIGNMENT)
- s = "bad alignment";
- else if (err == ERR_CRC)
- s = "bad crc";
- else if (err == ERR_OVERSIZE)
- s = "oversized packet";
- else if (err == ERR_DRIBBLE)
- s = "dribble bits";
-
- if (s)
- printf("%s: %s\n", sc->sc_dev.dv_xname, s);
- }
-
- if (len & ERR_INCOMPLETE)
- return;
-
- if (len & ERR_RX) {
- ++ifp->if_ierrors;
- goto abort;
- }
-
- len &= RX_BYTES_MASK; /* Lower 11 bits = RX bytes. */
-
- /* Pull packet off interface. */
- m = epget(sc, len);
- if (m == 0) {
- ifp->if_ierrors++;
- goto abort;
- }
-
- ++ifp->if_ipackets;
-
- /* We assume the header fit entirely in one mbuf. */
- eh = mtod(m, struct ether_header *);
-
-#if NBPFILTER > 0
- /*
- * Check if there's a BPF listener on this interface.
- * If so, hand off the raw packet to BPF.
- */
- if (ifp->if_bpf) {
- bpf_mtap(ifp->if_bpf, m);
-
- /*
- * Note that the interface cannot be in promiscuous mode if
- * there are no BPF listeners. And if we are in promiscuous
- * mode, we have to check if this packet is really ours.
- */
- if ((ifp->if_flags & IFF_PROMISC) &&
- (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */
- bcmp(eh->ether_dhost, sc->sc_arpcom.ac_enaddr,
- sizeof(eh->ether_dhost)) != 0) {
- m_freem(m);
- return;
- }
- }
-#endif
-
- /* We assume the header fit entirely in one mbuf. */
- m_adj(m, sizeof(struct ether_header));
- ether_input(ifp, eh, m);
-
- /*
- * In periods of high traffic we can actually receive enough
- * packets so that the fifo overrun bit will be set at this point,
- * even though we just read a packet. In this case we
- * are not going to receive any more interrupts. We check for
- * this condition and read again until the fifo is not full.
- * We could simplify this test by not using epstatus(), but
- * rechecking the RX_STATUS register directly. This test could
- * result in unnecessary looping in cases where there is a new
- * packet but the fifo is not full, but it will not fix the
- * stuck behavior.
- *
- * Even with this improvement, we still get packet overrun errors
- * which are hurting performance. Maybe when I get some more time
- * I'll modify epread() so that it can handle RX_EARLY interrupts.
- */
- if (epstatus(sc)) {
- len = inw(BASE + EP_W1_RX_STATUS);
- /* Check if we are stuck and reset [see XXX comment] */
- if (len & ERR_INCOMPLETE) {
- if (ifp->if_flags & IFF_DEBUG)
- printf("%s: adapter reset\n",
- sc->sc_dev.dv_xname);
- epreset(sc);
- return;
- }
- goto again;
- }
-
- return;
-
-abort:
- outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
- while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
- ;
-}
-
-struct mbuf *
-epget(sc, totlen)
- struct ep_softc *sc;
- int totlen;
-{
- struct ifnet *ifp = &sc->sc_arpcom.ac_if;
- struct mbuf *top, **mp, *m;
- int len;
- int sh;
-
- m = sc->mb[sc->next_mb];
- sc->mb[sc->next_mb] = 0;
- if (m == 0) {
- MGETHDR(m, M_DONTWAIT, MT_DATA);
- if (m == 0)
- return 0;
- } else {
- /* If the queue is no longer full, refill. */
- if (sc->last_mb == sc->next_mb)
- timeout(epmbuffill, sc, 1);
- /* Convert one of our saved mbuf's. */
- sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
- m->m_data = m->m_pktdat;
- m->m_flags = M_PKTHDR;
- }
- m->m_pkthdr.rcvif = ifp;
- m->m_pkthdr.len = totlen;
- len = MHLEN;
- top = 0;
- mp = &top;
-
- /*
- * We read the packet at splhigh() so that an interrupt from another
- * device doesn't cause the card's buffer to overflow while we're
- * reading it. We may still lose packets at other times.
- */
- sh = splhigh();
-
- while (totlen > 0) {
- if (top) {
- m = sc->mb[sc->next_mb];
- sc->mb[sc->next_mb] = 0;
- if (m == 0) {
- MGET(m, M_DONTWAIT, MT_DATA);
- if (m == 0) {
- splx(sh);
- m_freem(top);
- return 0;
- }
- } else {
- sc->next_mb = (sc->next_mb + 1) % MAX_MBS;
- }
- len = MLEN;
- }
- if (totlen >= MINCLSIZE) {
- MCLGET(m, M_DONTWAIT);
- if (m->m_flags & M_EXT)
- len = MCLBYTES;
- }
- len = min(totlen, len);
- if (EP_IS_BUS_32(sc->bustype)) {
- if (len > 3) {
- len &= ~3;
- insl(BASE + EP_W1_RX_PIO_RD_1,
- mtod(m, caddr_t), len / 4);
- } else
- insb(BASE + EP_W1_RX_PIO_RD_1,
- mtod(m, caddr_t), len);
- } else {
- if (len > 1) {
- len &= ~1;
- insw(BASE + EP_W1_RX_PIO_RD_1,
- mtod(m, caddr_t), len / 2);
- } else
- *(mtod(m, caddr_t)) =
- inb(BASE + EP_W1_RX_PIO_RD_1);
- }
- m->m_len = len;
- totlen -= len;
- *mp = m;
- mp = &m->m_next;
- }
-
- outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
- while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
- ;
-
- splx(sh);
-
- return top;
-}
-
-int
-epioctl(ifp, cmd, data)
- register struct ifnet *ifp;
- u_long cmd;
- caddr_t data;
-{
- struct ep_softc *sc = ep_cd.cd_devs[ifp->if_unit];
- struct ifaddr *ifa = (struct ifaddr *)data;
- struct ifreq *ifr = (struct ifreq *)data;
- int s, error = 0;
-
- s = splnet();
-
- if (sc->bustype == EP_BUS_PCMCIA &&
- (sc->pcmcia_flags & EP_ABSENT)) {
- if_down(ifp);
- printf("%s: device offline\n", sc->sc_dev.dv_xname);
- splx(s);
- return ENXIO;
- }
-
- if ((error = ether_ioctl(ifp, &sc->sc_arpcom, cmd, data)) > 0) {
- splx(s);
- return error;
- }
-
- switch (cmd) {
-
- case SIOCSIFADDR:
- ifp->if_flags |= IFF_UP;
-
- switch (ifa->ifa_addr->sa_family) {
-#ifdef INET
- case AF_INET:
- epinit(sc);
- arp_ifinit(&sc->sc_arpcom, ifa);
- break;
-#endif
- default:
- epinit(sc);
- break;
- }
- break;
-
- case SIOCSIFFLAGS:
- if ((ifp->if_flags & IFF_UP) == 0 &&
- (ifp->if_flags & IFF_RUNNING) != 0) {
- /*
- * If interface is marked down and it is running, then
- * stop it.
- */
- epstop(sc);
- ifp->if_flags &= ~IFF_RUNNING;
- } else if ((ifp->if_flags & IFF_UP) != 0 &&
- (ifp->if_flags & IFF_RUNNING) == 0) {
- /*
- * If interface is marked up and it is stopped, then
- * start it.
- */
- epinit(sc);
- } else {
- /*
- * deal with flags changes:
- * IFF_MULTICAST, IFF_PROMISC,
- * IFF_LINK0, IFF_LINK1,
- */
- epsetfilter(sc);
- epsetlink(sc);
- }
- break;
-
- case SIOCADDMULTI:
- case SIOCDELMULTI:
- error = (cmd == SIOCADDMULTI) ?
- ether_addmulti(ifr, &sc->sc_arpcom) :
- ether_delmulti(ifr, &sc->sc_arpcom);
-
- if (error == ENETRESET) {
- /*
- * Multicast list has changed; set the hardware filter
- * accordingly.
- */
- epreset(sc);
- error = 0;
- }
- break;
-
- default:
- error = EINVAL;
- break;
- }
-
- splx(s);
- return (error);
-}
-
-void
-epreset(sc)
- struct ep_softc *sc;
-{
- int s;
-
- s = splnet();
- epstop(sc);
- epinit(sc);
- splx(s);
-}
-
-void
-epwatchdog(unit)
- int unit;
-{
- struct ep_softc *sc = ep_cd.cd_devs[unit];
-
- log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname);
- ++sc->sc_arpcom.ac_if.if_oerrors;
-
- epreset(sc);
-}
-
-void
-epstop(sc)
- register struct ep_softc *sc;
-{
-
- outw(BASE + EP_COMMAND, RX_DISABLE);
- outw(BASE + EP_COMMAND, RX_DISCARD_TOP_PACK);
- while (inw(BASE + EP_STATUS) & S_COMMAND_IN_PROGRESS)
- ;
- outw(BASE + EP_COMMAND, TX_DISABLE);
- outw(BASE + EP_COMMAND, STOP_TRANSCEIVER);
- outw(BASE + EP_COMMAND, RX_RESET);
- outw(BASE + EP_COMMAND, TX_RESET);
- outw(BASE + EP_COMMAND, C_INTR_LATCH);
- outw(BASE + EP_COMMAND, SET_RD_0_MASK);
- outw(BASE + EP_COMMAND, SET_INTR_MASK);
- outw(BASE + EP_COMMAND, SET_RX_FILTER);
-
- epmbufempty(sc);
-}
-
-/*
- * We get eeprom data from the id_port given an offset into the
- * eeprom. Basically; after the ID_sequence is sent to all of
- * the cards; they enter the ID_CMD state where they will accept
- * command requests. 0x80-0xbf loads the eeprom data. We then
- * read the port 16 times and with every read; the cards check
- * for contention (ie: if one card writes a 0 bit and another
- * writes a 1 bit then the host sees a 0. At the end of the cycle;
- * each card compares the data on the bus; if there is a difference
- * then that card goes into ID_WAIT state again). In the meantime;
- * one bit of data is returned in the AX register which is conveniently
- * returned to us by inb(). Hence; we read 16 times getting one
- * bit of data with each read.
- */
-static u_short
-epreadeeprom(id_port, offset)
- int id_port;
- int offset;
-{
- int i, data = 0;
-
- outb(id_port, 0x80 + offset);
- delay(1000);
- for (i = 0; i < 16; i++)
- data = (data << 1) | (inw(id_port) & 1);
- return (data);
-}
-
-static int
-epbusyeeprom(sc)
- struct ep_softc *sc;
-{
- int i = 100, j;
-
- if (sc->bustype == EP_BUS_PCMCIA) {
- delay(1000);
- return 0;
- }
-
- while (i--) {
- j = inw(BASE + EP_W0_EEPROM_COMMAND);
- if (j & EEPROM_BUSY)
- delay(100);
- else
- break;
- }
- if (!i) {
- printf("\n%s: eeprom failed to come ready\n",
- sc->sc_dev.dv_xname);
- return (1);
- }
- if (j & EEPROM_TST_MODE) {
- printf("\n%s: erase pencil mark, or disable plug-n-play mode!\n",
- sc->sc_dev.dv_xname);
- return (1);
- }
- return (0);
-}
-
-void
-epmbuffill(arg)
- void *arg;
-{
- struct ep_softc *sc = arg;
- int s, i;
-
- s = splnet();
- i = sc->last_mb;
- do {
- if (sc->mb[i] == NULL)
- MGET(sc->mb[i], M_DONTWAIT, MT_DATA);
- if (sc->mb[i] == NULL)
- break;
- i = (i + 1) % MAX_MBS;
- } while (i != sc->next_mb);
- sc->last_mb = i;
- /* If the queue was not filled, try again. */
- if (sc->last_mb != sc->next_mb)
- timeout(epmbuffill, sc, 1);
- splx(s);
-}
-
-void
-epmbufempty(sc)
- struct ep_softc *sc;
-{
- int s, i;
-
- s = splnet();
- for (i = 0; i<MAX_MBS; i++) {
- if (sc->mb[i]) {
- m_freem(sc->mb[i]);
- sc->mb[i] = NULL;
- }
- }
- sc->last_mb = sc->next_mb = 0;
- untimeout(epmbuffill, sc);
- splx(s);
-}